GB2220821B - Small electronic apparatus - Google Patents

Small electronic apparatus

Info

Publication number
GB2220821B
GB2220821B GB8901953A GB8901953A GB2220821B GB 2220821 B GB2220821 B GB 2220821B GB 8901953 A GB8901953 A GB 8901953A GB 8901953 A GB8901953 A GB 8901953A GB 2220821 B GB2220821 B GB 2220821B
Authority
GB
United Kingdom
Prior art keywords
electronic apparatus
small electronic
small
electronic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB8901953A
Other versions
GB8901953D0 (en
GB2220821A (en
Inventor
Takayuki Nonami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB8901953D0 publication Critical patent/GB8901953D0/en
Publication of GB2220821A publication Critical patent/GB2220821A/en
Application granted granted Critical
Publication of GB2220821B publication Critical patent/GB2220821B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
    • H04M1/505—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies signals generated in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Input From Keyboards Or The Like (AREA)
GB8901953A 1988-07-15 1989-01-30 Small electronic apparatus Expired - Fee Related GB2220821B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63175230A JPH0226167A (en) 1988-07-15 1988-07-15 Compact electronic equipment

Publications (3)

Publication Number Publication Date
GB8901953D0 GB8901953D0 (en) 1989-03-22
GB2220821A GB2220821A (en) 1990-01-17
GB2220821B true GB2220821B (en) 1992-10-14

Family

ID=15992547

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8901953A Expired - Fee Related GB2220821B (en) 1988-07-15 1989-01-30 Small electronic apparatus

Country Status (5)

Country Link
US (1) US4922527A (en)
JP (1) JPH0226167A (en)
AU (1) AU613149B2 (en)
GB (1) GB2220821B (en)
SE (1) SE8900306L (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5398031A (en) * 1989-07-28 1995-03-14 Rohm Co., Ltd. DTMF signal generating circuit
AU643545B2 (en) * 1990-08-16 1993-11-18 Alcatel Australia Limited Confidence tone arrangement for telephone subset
JP2560660Y2 (en) * 1991-03-29 1998-01-26 村田機械株式会社 Wireless telephone
FI89651C (en) * 1991-11-12 1993-10-25 Nokia Mobile Phones Ltd ELEKTRONISKT KNAEPPNINGSSVAR FOER EN FOLIEKNAPPSATS I EN MOBILTELEFON
NL9200320A (en) * 1992-02-20 1993-09-16 Ericsson Radio Systems Bv CHAIN FOR LINKING A TELEPHONE AND CALLS FROM A PERSONAL CALL SYSTEM.
DE69333451T2 (en) * 1993-03-08 2004-12-23 Matsushita Electric Industrial Co., Ltd., Kadoma Speech and sound output device for a portable telephone
DE9320137U1 (en) * 1993-12-30 1994-04-28 Merker, Andreas, Dipl.-Ing., 46397 Bocholt Number generator
US5490214A (en) * 1994-07-08 1996-02-06 Voice Technologies Group, Inc. Method and apparatus for selectively generating control signals in a telephone system
US5907597A (en) * 1994-08-05 1999-05-25 Smart Tone Authentication, Inc. Method and system for the secure communication of data
US5583933A (en) * 1994-08-05 1996-12-10 Mark; Andrew R. Method and apparatus for the secure communication of data
FR2761221A1 (en) * 1997-03-18 1998-09-25 Philips Electronics Nv INFORMATION COMMUNICATION APPARATUS, ESPECIALLY TELEPHONE APPARATUS
CN1161745C (en) * 1998-12-31 2004-08-11 约翰·A·布莱克曼 Sound generator: piezoelectric buzzer on flexiable and tightening surface of inflated material
US6477390B1 (en) 1999-09-28 2002-11-05 Qualcomm, Incorporated Apparatus and method for intuitive audio keypad navigation for a wireless communication device
US7177434B2 (en) * 2002-01-18 2007-02-13 Sing-A-Tune Balloons, Llc Stepped sound producing module
US20050164597A1 (en) * 2004-01-23 2005-07-28 Tripoli Melchiore (Mike) Iii System and method for attaching components within an inflatable object
US6994219B2 (en) * 2004-01-26 2006-02-07 General Electric Company Method for magnetic/ferrofluid separation of particle fractions
US7538590B2 (en) * 2005-07-18 2009-05-26 Micron Technology, Inc. Methods and apparatus for dividing a clock signal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496799A (en) * 1982-12-13 1985-01-29 International Telephone And Telegraph Corporation Handsfree telephone instrument using digital dial
US4528681A (en) * 1982-12-29 1985-07-09 At&T Bell Laboratories Button depression click generator
NL8303701A (en) * 1983-10-27 1985-05-17 Philips Nv DTMF TELEPHONE WITH MULTIPLE USE OF THE DIGITAL TONE GENERATOR LOGIC.

Also Published As

Publication number Publication date
GB8901953D0 (en) 1989-03-22
SE8900306D0 (en) 1989-01-30
JPH0226167A (en) 1990-01-29
SE8900306L (en) 1990-01-16
AU2951689A (en) 1990-01-18
GB2220821A (en) 1990-01-17
AU613149B2 (en) 1991-07-25
US4922527A (en) 1990-05-01

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19951107

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000130